The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Portrait of Arkady Yartsev. Photo: Kennet Ruona

Arkady Yartsev

Researcher

Portrait of Arkady Yartsev. Photo: Kennet Ruona

Ternary Organic Solar Cells with Minimum Voltage Losses

Author

  • Chuanfei Wang
  • Wei Zhang
  • Xiangyi Meng
  • Jonas Bergqvist
  • Xianjie Liu
  • Zewdneh Genene
  • Xiaofeng Xu
  • Arkady Yartsev
  • Olle Inganäs
  • Wei Ma
  • Ergang Wang
  • Mats Fahlman

Summary, in English

A new strategy for designing ternary solar cells is reported in this paper. A low-bandgap polymer named PTB7-Th and a high-bandgap polymer named PBDTTS-FTAZ sharing the same bulk ionization potential and interface positive integer charge transfer energy while featuring complementary absorption spectra are selected. They are used to fabricate efficient ternary solar cells, where the hole can be transported freely between the two donor polymers and collected by the electrode as in one broadband low bandgap polymer. Furthermore, the fullerene acceptor is chosen so that the energy of the positive integer charge transfer state of the two donor polymers is equal to the energy of negative integer charge transfer state of the fullerene, enabling enhanced dissociation of all polymer donor and fullerene acceptor excitons and suppressed bimolecular and trap assistant recombination. The two donor polymers feature good miscibility and energy transfer from high-bandgap polymer of PBDTTS-FTAZ to low-bandgap polymer of PTB7-Th, which contribute to enhanced performance of the ternary solar cell.

Department/s

  • Chemical Physics

Publishing year

2017-11-08

Language

English

Publication/Series

Advanced Energy Materials

Volume

7

Issue

21

Document type

Journal article

Publisher

Wiley-Blackwell

Topic

  • Polymer Technologies
  • Textile, Rubber and Polymeric Materials
  • Energy Systems
  • Condensed Matter Physics

Keywords

  • binary equivalent
  • minimum voltage losses
  • same bulk and interface energy
  • ternary solar cells

Status

Published

ISBN/ISSN/Other

  • ISSN: 1614-6832